Your amps and gear don't see those miles of cables leading to your home. They do see that 6' inn front of your gear.
Hmm....not so sure that’s true , I think it might be safer to say we just have less control over that.
I am certainly a power cord advocate, I have (for an example) three different cords here for my Gamut amp. The one that seems to jive is the Wireworld Platinum . But two things here , we are talking about differences here and it sounds preferable to me ( better is likely another thread) and you would have to be well intimated to the system to hear because these are improvements on small incremental magnitudes.
So , I have always visualized that a power cord is just part of the component. So you find one that works well and doesnÂ’t change the sound of the component .
Now, just spitballing here , what if one were to have the manufacturer build you a 40’ length of the chosen cord and you bolted the one end right into the breaker ( highly illegal but for example) ... safe to say now that you would improve the sound again because your component is literally now attached to the breaker
Point being , that’s why we have 20 gauge dedicated ground 20 amp circuits brought to our listening rooms .... because it improves the sound . If the amp didn’t “see” that why would we do it. Beyond that measure we don’t have much control on what the incoming power is doing.
The best setups have balanced power sub panels that the outlets for the audio gear are wired into . The massive transformers in these things certainly mitigate issues with power but make no mistake your equipment is Seeing this . It is really a question of how far your finances and listening room practicalities will allow you to jump down a very deep rabbit hole.
Just as a side, my wife is a principle figure at one of if not the most advanced cancer clinic in Canada and on the radiation side (her specialty) one of the most advanced in the world. I have been through these bunkers many times and the electronics used to run these multi million dollar linear accelerators is quite something to see.
Obviously these control rooms have some cutting edge sophisticated electronics but what is particularly interesting is each bunker has a massive balanced power sub panel that all these electronics are wired back to .
I talked not that long ago to one of the service techs from Varion (manufacture of the radiation equipment) When I was in there picking my wife up from work . This guy and a German fella from Siemens were updated some of the electronics to one of the bunkers. I asked about the power and confirmed that this is in fact completely balanced.
The Tech mentioned that this was the only way they can control the noise down to the point acceptable for these delicate and sophisticated electronics to do there job as designed and with long term reliability.
Of particular interest to me was the shielded black cables running to the equipment . They look like cab cable you would see on a tractor trailer type hook up, similar in size and look at any rate. Anyway, it turns out these are custom made for the application ( presumable not just this application) as Power cord and they are a triple shielded 10 gauge silver plated copper affair with a very particular wind to further reject noise.
So long story long... there is some science here, most of which is well above my pay grade but I certainly have come to the conclusion that our equipment will see whatever is in front of it , itÂ’s just not readily controllable.
